Page 2 - Science Focus (Issue 017)
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Contents







                                   Science Focus Issue 017, 2020




        What’s Happening in Hong Kong? 香港科技活動                  Amusing World of Science 趣味科學
           Solar Eclipse — June 21, 2020                  1      The Making of a Cozy Home…With Snow          14
           日食 — 2020 年 6 月 21 日                                  極地愜意的家 — 冰屋大解構
           Perseid Meteor Shower — August 12, 2020               Cultured Meat: The Future of the Meat Industry   16
           英仙座流星雨 — 2020 年 8 月 12 日                              「種」出人造肉 — 未來的肉類生產方法？
        Science in History 昔日科學                                  Hungry Mathematicians and the Ham Sandwich   19
             The Sweetest Encounter:                      2      肚餓的數學家與他們的火腿三文治
           Discovery of the First Artificial Sweetener           Gut Microbiota — Microorganisms and Our Health   24
           最甜的巧遇 — 首隻人工甜味劑                                       腸道菌群 — 微生物與我們的健康
                                                                 Lab Safety — Can You Identify All the Potential   26
        Science Today 今日科學                                       Hazards?
           Quantum Teleportation, or How to Fax a Particle to the Orbit  6     實驗室安全 — 你能找出所有潛在的危險嗎？
           量子遙傳 — 粒子傳真大法                                       Acknowledgements 特別致謝
           Programmable Liquid Matter: A Metal That “Bends” to Your Will  9
           可編程液態物質：能被隨心所欲地操縱的變形金屬
           Optical Tweezers                              12
           光學鑷子



        Message from the Editor-in-Chief 主編的話


        Dear Readers,                                                  親愛的讀者：
            Since the last issue of Science Focus, we have all tried to adapt to a new   自上期《科言》出版以後，我們都嘗試著適應我們的
        mode of life. Online learning has become a norm for both secondary schools   「新生活」— 網上學習已經變成了中學和大學日常的教
        and universities. Although we are used to learning “life hacks” from social   學模式。雖然我們都習慣在社交媒體和網上平台學習一
        media and online platforms, it is perhaps too soon to assess the outcome of   些生活小知識，可是要談及網上課程能否取代正規課堂
        substituting formal lessons with ones delivered via electronic devices. Have   的話，此刻也許還言之尚早。在這段可以較自由地選擇
        you been exploring scientific topics that were not covered in the formal   自己學習方式的期間，您有沒有探索一些課程以外的科
        curriculum, during this period of more “flexible” learning? If not, we hope the   學題材？沒有的話，我們希望今期的文章可以為您提供
        articles in this issue will provide useful starting points.    一些學習的契機。
            Many of the articles are related to food. Did you know that a laboratory
        accident led to the discovery of artificial sweeteners? For those of you who   今期不少文章都與食物有關。您知道代糖是怎樣意
        enjoy a ham sandwich, have you thought about the mathematics of cutting   外地被科學家發現的？喜歡吃火腿三文治的您，有想過
        one? What if the ham you used was originally from a laboratory instead of a   切三文治所涉及的數學嗎？那麼如果我告訴您那塊火腿
        pig? Furthermore, did you know you have been “sharing” the sandwich with   是來自實驗室的，而不是來自豬呢？還有，您知道您其實
        trillions of bacteria in your gut? We also cover topics you may have seen in   是與數以萬億計的細菌分享您那塊三文治嗎？今期《科
        sci-fi movies such as Star Trek and Terminator. It turns out scientists have been   言》還會提及一些您可能在《星空奇遇記》、《未來戰士》
        busy making teleportation and shape-changing metal a reality.    等科幻電影看過的情節，然後您會發現原來科學家一直
            To conclude, I wish you all good health and good fortune for the rest of   都致力把瞬間轉移和變形金屬化為現實。
        the school year. Stay curious!                                     最後，希望大家能保持身體健康，並在學期餘下的
                                                                       時間一切順利。還要時刻保持您的好奇心啊！
        Yours faithfully,
        Prof. Ho Yi Mak                                                                             主編 麥晧怡教授
        Editor-in-Chief                                                                                      敬上




           Scientific Advisors 科學顧問                               Student Editorial Board 學生編委
           Prof. Jason Chan 陳鈞傑教授     Editor-in-Chief 主編輯         Editors 編輯               Graphic Designers 設計師
           Prof. Ivan Ip 葉智皓教授        Prof. Ho Yi Mak 麥晧怡教授       Sonia Choy 蔡蒨珩           Sarah Feng 丰志潔
                                                                  Kit Kan 簡迎曦              Bryan Siu 蕭浩延
           Prof. Pak Wo Leung 梁伯和教授   Managing Editor 總編輯         Henry Lau 劉以軒            Joni Tang 鄧采瑩
           Prof. Kam Sing Wong 黃錦聖教授  Daniel Lau 劉劭行              Chih-yu Lee 李致宇          Cheuk Hei Tsang 曾卓希
                                                                  Yasine Malki 馬建生
           Prof. Angela Wu 吳若昊教授                                  Chantelle Sullivan 蘇盈安   Lynn Zhang 張海琳
                                                                  Terrence Tai 戴煒庭
                                                                  Clara Tung 董卓衡


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